RSJ Posts

Rolled Steel Joists (RSJs) are integral in various applications, offering unmatched strength and durability. Whether you’re in the midst of a construction or a commercial project, these steel structures are essential for their robust durability and unparalleled strength.

Want to learn more about our RSJ posts for your business? Get in touch today.

The Benefits of Using RSJ Posts

Let’s take a look at some of the benefits of using Armco RSJ posts:

Robust and Impact-Resistant Construction

RSJ posts are the backbone of any Armco barrier system. Their primary role is to ensure that the crash barrier remains firmly in place, even under the most demanding conditions. They’re robust and capable of withstanding heavy impacts, making RSJ posts the go-to choice for reinforcing off-highway safety barrier systems, ensuring they perform optimally when it matters most.

Versatility in Applications

Due to their availability in different sizes, RSJ posts are useful in various applications. In the unfortunate event of a collision, RSJ posts play a crucial role in safeguarding buildings, structures, and pedestrians by maintaining their strength and stability, thereby mitigating potential harm and damage.

Integral Part of Armco Barrier Systems

RSJ posts are used in conjunction with beams to form the complete Armco barrier system. This combination enhances the barriers’ effectiveness, ensuring they offer maximum protection. The easy installation of RSJ posts into the barrier system is key to its ability to absorb and withstand significant impacts and forces, such as those from out-of-control vehicles.

560 Bolt Down Shock Absorbing Post 127 x 76 RSJ

Different types of RSJ Posts

At Armco Direct, we have a variety of RSJ posts. We stock models such as the 610 Bolt Down Post for cars and LGV, which is an affordable option that is compatible with all barriers. The 560 Bolt Down Shock Absorbing Post for forklift trucks is a slightly more durable option. Both will withstand daily wear and tear. 

If you want to create a pedestrian route, then the 760 Bolt Down Post with handrail extensions is a good option. These posts are simple to install – instead of digging them into the ground, they can be bolted in place. This makes them ideal for pedestrianised areas and, due to their handrail extensions, they are suitable for easy installation of handrails.

If you require a RSJ Post in a loading bay area frequented by a heavy goods vehicle, then you may want to consider the 760 Bolt Down Shock Steel Post as your best option. This product has flexible rubber absorbers and is designed to be durable and withstand heavy knocks without needing to be replaced. If you are unsure of which one to go for and would like to know more, contact our team and one of the experts will be able to sit down and guide you through the potential options.

1800 Dig In Post 127 x 76 RSJ (Double Beam)

Bolt Down Posts are built to last

Our Bolt Down Posts come with an 85-year life expectancy, meaning you’ll acquire a safety-driven solution that ensures the highest level of protection for a lifetime – keeping costs low!

These posts are galvanised to BS EN 1461 standards, making them resistant to corrosion and ensuring they can hold up in the harshest of conditions.

Galvanisation also makes sure that your barriers and steel posts last longer, have the strongest possible coating for crash protection, and are very low maintenance for several decades.

560 Bolt Down Shock Absorbing Post 127 x 76 RSJ

Need a quote for RSJ Posts?

RSJ posts and Armco safety barriers could be one of the best investments you’ll ever make, should you wish to reduce the possibility of expensive damage to your workplace or, worse yet, critical injury to your employees.

Calculate your needs and project requirements using our free online Armco calculator tool, and we will provide you with a list of the products that you may need and an accurate, no-obligation quote for the price you might pay.

Keep in mind that if you need help installing our products, we can put you in contact with one of our Armco experts who can complete the installation for you both quickly and seamlessly.

Get in touch with us today by calling us on 01530 839 955 or emailing us at

Armco Quick Quote


We’ve answered some of the most frequently asked questions about RSJ posts below:

What are RSJ Posts?

Rolled Steel Joist (RSJ) posts are structures made from steel. Their distinctive shape makes them the perfect solution for areas where large and heavy vehicles could be moving at speed. Both H- and I-shaped RSJ posts are renowned for being very strong and durable for off-highway protection.

What steel is an RSJ made of?

Mild steel is typically used to make rolled steel joists, also known as RSJs. They can be extruded, hot-rolled, or cold-rolled into shape – and then have a galvanised finish to meet British and European standards.